When looking at an array of bytes from a stream for a multi-page tiff document, can you determine where one page stops and another begins? I want to take a multi page document, let's say 50 pages and allow a user to pick different pages of that to make other muti-page documents.
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I have built a simple image viewer in .NET and have the requirement to display multi-frame TIFF images in the browser. Presently, I have a (ashx) handler setup to stream back JPEGs that are co-mingled in the same database as the multi-frame TIFF's and it's worth mentioning that this handler will also return the first frame of the TIFF file in its current state. In the VB.NET code below (part of the handler) I am able to identify if a TIFF file has multiple frames and I started attempting to stitch the frames together but have not had any success yet. Has anyone returned multi-frame TIFF's using a similar approach? Note: I used the How to open a multi-frame TIFF image as a reference when developing the code below.
context.Response.Cache.SetCacheability(HttpCacheability.NoCache)
context.Response.Cache.SetNoStore()
context.Response.Cache.SetExpires(DateTime.MinValue)
[code].....
I import below codes into my program to scan documents but I've got error on it.[code]I tried to click the error correction options but no suggestions has made.I've got "Acquisition not defined" with this codes also.
View 11 RepliesI have a bunch of images that I want to save as 1 tiff file.
I can get it to read just fine. But It is not picking up frames. I think it has to do with the encoderParamters.[code]...
I'm developing a program that will show multipage tiff in a picturebox using vb.
View 9 RepliesOk what's happening is I'm pulling in a Tiff file that can have multiple pages. I selected the first frame, draw a stamp image to it and save it as a different file name.When I do this, it is only saving the first page of the tiff file. How do I get all of the pages to save?
vb
NetDMS.exportDocumentImageWithAnnotations(_workflow, disn, "C:JCEmailFld", "emailDocument" + currEmailDoc.ToString)
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What exactly does this line do?
i = stream.Read(bytes, 0, bytes.Length)
Does it read the entire message string sent by the client? I have a line to write to the stream later in the code and that does not seem to be sending anything back to the client, although the code around is excuting.
i = stream.Read(bytes, 0, bytes.Length)
While (i <> 0)
Try
' Translate data bytes to a ASCII string.
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I'm writing a VB.net application (but you can answer in C# if you want, no problem) that uses a 3rd party .NET library. In particular, one method in this library takes an IO.Stream as input (among other things) and writes the results of its processing to said stream. My problem is that the method CLOSES the stream after writing to it, so I can't read back the data that it wrote in it!To be more specific: it works, of course, if the stream is a FIeStream , since it writes the data on disk, but what if I want to read the data directly to memory? I tried using a MemoryStream, but as I said, when the method returns the stream is already closed, and I can't read back anything from it.
Imports System.IO
Public Class CloseHijackedMemoryStream
Inherits MemoryStream
[code]...
I tried following Private Function ConvertToTiff(ByVal sourceFileName, ByVal
[Code]...
Is there any way to convert word document to tiff programatically without installing word application.
View 2 RepliesI am sending a POST request to an API server and I have reused code where I have successfully done this before on other servers and for some reason, which I cannot figure out why, it's not working. I get the error:
"Cannot close stream until all bytes are written."[code]...
I would like to use the USB port power as source and use the an amplifier on D+/D- Twisted Pair signal wires as my command line. I saw a thread suggesting to use the output as PWM. How can I send a single byte or stream of bytes to the port. Is it possible to read status of the D+/D- if they are shorted together?
View 7 RepliesI am sending a POST request to an API server and I have reused code where I have successfully done this before on other servers and for some reason, which I cannot figure out why, it's not working. I get the error:
Cannot close stream until all bytes are written."}
even though I declared the content length correctly and I am not sure what I am missing here...
data = data + "</posts>"
Dim postBytes As [Byte]() = Encoding.UTF8.GetBytes(data)
Thread.Sleep(10000)
[Code].....
I have a testing platform that allows data to be posted to a real time collection system. It uses the StreamWriter object to send both HTTP and XML formats, It works fine, but there is a new request to submit uploaded files. This again works fine, unless the files are over 70k (we need to test upto 3MB). If it is over 70k, the response is the content-length too big. I have changed it so that the content-length is now set dynamically, dependant on the size of the file uploaded. However, when the StreamWriter.Close() runs, the execption The request was aborted: The request was canceled. is generated, with the InnerException Cannot close stream until all bytes are written.
From what I have found on the web, the solution is use StreamWriter.Flush(), but this code is already in place.
[Code]...
how can i add a page onto a tiff and save the bitmap?
VB
Dim img As System.Drawing.Image
img = Image.FromFile(imgPath)
Dim fd As System.Drawing.Imaging.FrameDimension = New
[Code].....
We are using vb.net to write tiff images. After the image is first scanned into the system, we read it into bitmap memory, then we write it back out as a tif and pass in arguments that tell it what to put in the header. When we look at the original file, the header shows the "Subfile type" as "single page of multi-page image". But we noticed that after the file is written, the header now shows the "subfile type" as "Full-resolution image". We do not currently pass any argument in that tells it to do that.Is there a way to pass an argument into the function that writes the tiff file to tell it we want a single-page tiff and NOT a full resolution image? For some reason, our customer's tiff reader is not accurately reading some of these files and we believe it might be the cause of this.
View 11 RepliesI have this code that was working in a proof of concept app I had - but now will not work.
For Each ddfile As String In ddfiles Dim MyThread As Thread ' simple new thread Dim newFS As FSObject = New FSObject() 'new FSObject which is a file object I made up' used because i needed to keep the name and index matched so the callback function had something to work with
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I am trying to integrate iTextSharp into an existing Document Imaging application that allows users to rotate individual pages that may have been scanned in at an incorrect angle (it happens more often than I would have thought).
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How can I get html document from a stream?
View 3 RepliesI'm trying to extract a single page from a multi page pdf and I'm using the code below;however, I'm getting an error that it's not recognizing <param name>.
''' <summary>
''' Extract a single page from source pdf to a new pdf
''' </summary>
[code].....
I'm trying to extract a single page from a multi page pdf and I'm using the code below; however, I'm getting an error that it's not recognizing <param name>. [code]...
View 1 RepliesI am reading in files.....doc, pdf, rtf, and txt. I ready them into a byte array? is there way that I can take that array and store it in as a tiff file?
View 4 RepliesThis code was intended to split a long text file into pages based on the calculations of lines_per_page.The code only prints one page of a three page document.But a very strange thing happens if I click print a second time the message box which shows "Document 1 Page X of XX goes crazy up to 100 pages until I click cancel.The code compiles fine, just doesn't function as intended. [code]
View 1 Repliesprints out the tiff tags associated with a tiff file?
View 5 RepliesFrom few days I am doing efforts to read web pages using webbrowser control in my desktop application. But it is very slower than my expectations(because I want to read lots of pages in minutes and browser control reads almost one page in 5 to 10 seconds), what I need is to read two or three tags written in web page.
So finally I decided to use something, which can give me only source code of page. I think StreamReader will help me to read it. I am not sure if it is flaxible with my purpose, or something else is there which can give me only html source code of web page.
I have written this code to read html code, but it gives error.
Quote:
System.ArgumentException: URI formats are not supported.
public static string Navigate(string URL)
{
[code]....
I have a simple problem (I think). I would like to get the CRC of this array of bytes
0x0 0x7E or 0 7E or 0
Anyway the one calculator I use gives me: 78F0 or 78 F0 (Hex). Anyway, I think its CRC16 but im not sure. So if anyway can show me some code to give me a CRC calculation that matches (78 F0 or 78F0), that would be great, Im not sure if you have to include 7E or not
I am downloading page data using the stream reader using readline.I want to concatenate each line into one long string for parsing The below line of code is not working: datajoined =dataline.Insert(datajoined.Length - 1, dataline.Length - 1)My inevitable goal here is to track stream data with a progress bar. But first I must learn to dload page data in chunks.
[Code]...
I have a byte array and I need to get 4 bytes from it at a certain location(16) but I don't want to convert it to a integer or anything just keep it as 4 bytes to store in a variable.
View 1 RepliesIn web service I have function that return bytes array. Now, I call it from VbScript and I need to catch result of this function. How I can catch result of this function in value that is gone be like a value that function return (bytes array)?
View 1 RepliesI need to get the bytes from an array of bytes starting at a certain index and for a certain length (4), how can get this? Note: I don't want to use the Array.copy sub as it is not a function.I need to put it in something like Sub MySub([arguement as byte()]the_function_I_Need(Array, index, length))
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